SOLID – Prinzipien objektorientierten Designs

Diese Prinzipien objektorientierten Designs sind Prinzipien, die zu gutem objektorientierten Design führen sollen.

„In computer programming, the term SOLID is a mnemonic acronym for five design principles intended to make software designs more understandable, flexible and maintainable.“

Initial	Concept
S	Single responsibility principle a class should have only a single responsibility (i.e. changes to only one part of the software’s specification should be able to affect the specification of the class).
O	Open/closed principle “software entities … should be open for extension, but closed for modification.”
L	Liskov substitution principle “objects in a program should be replaceable with instances of their subtypes without altering the correctness of that program.” See also design by contract.
I	Interface segregation principle “many client-specific interfaces are better than one general-purpose interface.”
D	Dependency inversion principle one should “depend upon abstractions, [not] concretions.”

Quellen:

• https://en.wikipedia.org/wiki/SOLID_(object-oriented_design):
• https://de.wikipedia.org/wiki/Prinzipien_objektorientierten_Designs#SOLID-Prinzipien